To provide a highly practical uniting-type bag which does not cause trouble if objects to be stored are comparatively heavy, and the objects to be stored can be taken in and out easily in a united state.

The uniting-type bag 1 is capable of uniting a first bag 2 and a second bag 3, and hauling and running. The first bag 2 is provided with a storing part 21 for storing the objects to be stored, and a long handle 22 allowing hauling and running, which is provided near a joining face with the second bag 3. The second bag 3 is provided with a storing part 31 for storing the objects to be stored. The first bag 2 and the second bag 3 are provided with a joining member for freely joining/separating both bags. The first bag 2 is provided with wheels 25 fitted on a lower face of the storing part 21, and supporting members 26 fitted to a lower part of the storing part 21 for placing the second bag 3. At least one of the storing part 21 or the storing part 31 has opening/closing parts 23 or 32 allowing taking in/out of the objects to be stored in a state that the second bag 3 is placed on the supporting members 26.